Check an array of strings contains a substring in JavaScript

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In this article, we will see how to check an array of strings containing a sub-string in JavaScript. To check the sub-string in an array of strings, we will use the following methods:

Using includes() method and filter() Method
Using includes() method and some() Method

Method 1: Using includes() method and filter() method

First, we will create an array of strings, and then use includes() and filter() methods to check whether the array elements contain a sub-string or not.

Example:

Javascript

const arr = ['Geeks', 'gfg', 'zambiatek', 'abc'];
const substr = 'eks';
 
const subArr = arr.filter(str => str.includes(substr));
 
console.log(subArr);

Output

[ 'Geeks', 'zambiatek' ]

Method 2: Using includes() method and some() method

First, we will create an array of strings, and then use includes() and some() methods to check whether the array elements contain a sub-string or not.

Example:

Javascript

const arr = ['Geeks', 'gfg', 'zambiatek', 'abc'];
const substr = 'eks';
 
const subArr = arr.some(str => str.includes(substr));
 
console.log(subArr);

Output

true

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